CVE-2021-38395 Honeywell Experion PKS and ACE Controllers Injection

Critical 9.1 Published Updated

Attackers can remotely execute arbitrary code and cause denial of service on Honeywell Experion PKS and ACE controllers via improper neutralization of special elements.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-38395?

CVE-2021-38395 is a critical code injection vulnerability in Honeywell Experion PKS, published on 28 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Honeywell Experion PKS C200, C200E, C300, and ACE controllers are vulnerable to improper neutralization of special elements in output, which may allow an attacker to remotely execute arbitrary code and cause a denial-of-service condition.

Weakness: CWE-74

Which versions are affected by CVE-2021-38395?

It affects 4 products.

Products include Honeywell Application Control Environment Firmware, Honeywell C200 Firmware, Honeywell C200e Firmware, Honeywell C300 Firmware.

How do I fix CVE-2021-38395?

No fix has been published for CVE-2021-38395 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2021-38395 being exploited?

There is no known exploitation of CVE-2021-38395 in the wild and no public exploit code.

Sources

Also known as GHSA-cqmh-9h94-59vr.

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